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MICROSTRUCTURE AND WEAR PROPERTIES OF LASER CLADTiB2+ TiC/FeCOMPOSITE COATING

Author

Listed:
  • X. H. WANG

    (Key Laboratory for Liquid-Solid Structural Evolution, and Processing of Materials, (Ministry of Education), Shandong University, Jinan 250061, China)

  • M. ZHANG

    (School of Mechanical Engineering, Shandong University, Jinan 250061, China)

  • B. S. DU

    (Shandong Electric Power Research Institute, Jinan 250002, China)

  • S. LI

    (Key Laboratory for Liquid-Solid Structural Evolution, and Processing of Materials, (Ministry of Education), Shandong University, Jinan 250061, China)

Abstract

Iron-based composite coatings reinforced withTiB2–TiCmultiple ceramic have been fabricated from a precursor ofB4C,TiO2andAlpowders by laser cladding. The effect ofTiO2andAlon the microstructure and wear properties of the coatings was investigated. The results showed that the volume fraction, type and size of the reinforcements were influenced by the content ofTiO2andAl.TiB2andTiCwere evenly distributed in the coating; however, most ofAl2O3were ejected from the coatings, only few of them retained in the coating acting as nucleation core of reinforcement or inclusion. The microhardness and wear resistance of the coatings were improved, whereas the friction coefficients of the coatings were considerably lower than that of substrate.

Suggested Citation

  • X. H. Wang & M. Zhang & B. S. Du & S. Li, 2012. "MICROSTRUCTURE AND WEAR PROPERTIES OF LASER CLADTiB2+ TiC/FeCOMPOSITE COATING," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 19(05), pages 1-10.
    • Handle: RePEc:wsi:srlxxx:v:19:y:2012:i:05:n:s0218625x12500527
    DOI: 10.1142/S0218625X12500527
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